mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-06 11:09:05 +03:00
9721da2e6a
Vectors that stick around in the AST were wasting a fair bit of memory due to the growth padding we keep by default. This patch goes after some of these vectors with the shrink_to_fit() stick to reduce waste. Since the AST can stay around for a long time, it is worth making an effort to shrink it down when we have a chance.
2222 lines
74 KiB
C++
2222 lines
74 KiB
C++
/*
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* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2021-2022, David Tuin <davidot@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/DeprecatedString.h>
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#include <AK/FlyString.h>
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#include <AK/HashMap.h>
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#include <AK/NonnullRefPtrVector.h>
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#include <AK/OwnPtr.h>
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#include <AK/RefPtr.h>
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#include <AK/Variant.h>
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#include <AK/Vector.h>
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#include <LibJS/Bytecode/CodeGenerationError.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Heap/Handle.h>
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#include <LibJS/Runtime/ClassFieldDefinition.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/EnvironmentCoordinate.h>
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#include <LibJS/Runtime/FunctionKind.h>
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#include <LibJS/Runtime/ModuleRequest.h>
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#include <LibJS/Runtime/PropertyKey.h>
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#include <LibJS/Runtime/Reference.h>
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#include <LibJS/Runtime/Value.h>
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#include <LibJS/SourceRange.h>
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#include <LibRegex/Regex.h>
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namespace JS {
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class Declaration;
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class ClassDeclaration;
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class FunctionDeclaration;
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class Identifier;
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class MemberExpression;
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class VariableDeclaration;
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template<class T, class... Args>
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static inline NonnullRefPtr<T>
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create_ast_node(SourceRange range, Args&&... args)
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{
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return adopt_ref(*new T(move(range), forward<Args>(args)...));
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}
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class ASTNode : public RefCounted<ASTNode> {
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public:
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virtual ~ASTNode() = default;
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// NOTE: This is here to stop ASAN complaining about mismatch between new/delete sizes in ASTNodeWithTailArray.
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void operator delete(void* ptr) { ::operator delete(ptr); }
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virtual Completion execute(Interpreter&) const = 0;
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virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const;
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virtual void dump(int indent) const;
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[[nodiscard]] SourceRange source_range() const;
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u32 start_offset() const { return m_start_offset; }
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void set_end_offset(Badge<Parser>, u32 end_offset) { m_end_offset = end_offset; }
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DeprecatedString class_name() const;
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template<typename T>
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bool fast_is() const = delete;
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virtual bool is_new_expression() const { return false; }
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virtual bool is_member_expression() const { return false; }
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virtual bool is_super_expression() const { return false; }
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virtual bool is_function_expression() const { return false; }
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virtual bool is_class_expression() const { return false; }
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virtual bool is_expression_statement() const { return false; }
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virtual bool is_identifier() const { return false; }
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virtual bool is_private_identifier() const { return false; }
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virtual bool is_scope_node() const { return false; }
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virtual bool is_program() const { return false; }
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virtual bool is_class_declaration() const { return false; }
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virtual bool is_function_declaration() const { return false; }
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virtual bool is_variable_declaration() const { return false; }
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virtual bool is_import_call() const { return false; }
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virtual bool is_array_expression() const { return false; }
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virtual bool is_object_expression() const { return false; }
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virtual bool is_string_literal() const { return false; }
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virtual bool is_update_expression() const { return false; }
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virtual bool is_call_expression() const { return false; }
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virtual bool is_labelled_statement() const { return false; }
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virtual bool is_iteration_statement() const { return false; }
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virtual bool is_class_method() const { return false; }
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protected:
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explicit ASTNode(SourceRange);
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private:
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// NOTE: These members are carefully ordered so that `m_start_offset` is packed with the padding after RefCounted::m_ref_count.
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// This creates a 4-byte padding hole after `m_end_offset` which is used to pack subclasses better.
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u32 m_start_offset { 0 };
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RefPtr<SourceCode> m_source_code;
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u32 m_end_offset { 0 };
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};
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// This is a helper class that packs an array of T after the AST node, all in the same allocation.
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template<typename Derived, typename Base, typename T>
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class ASTNodeWithTailArray : public Base {
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public:
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virtual ~ASTNodeWithTailArray() override
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{
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for (auto& value : tail_span())
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value.~T();
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}
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Span<T const> tail_span() const { return { tail_data(), tail_size() }; }
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T const* tail_data() const { return reinterpret_cast<T const*>(reinterpret_cast<uintptr_t>(this) + sizeof(Derived)); }
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size_t tail_size() const { return m_tail_size; }
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protected:
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template<typename ActualDerived = Derived, typename... Args>
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static NonnullRefPtr<ActualDerived> create(size_t tail_size, SourceRange source_range, Args&&... args)
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{
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static_assert(sizeof(ActualDerived) == sizeof(Derived), "This leaf class cannot add more members");
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static_assert(alignof(ActualDerived) % alignof(T) == 0, "Need padding for tail array");
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auto memory = ::operator new(sizeof(ActualDerived) + tail_size * sizeof(T));
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return adopt_ref(*::new (memory) ActualDerived(move(source_range), forward<Args>(args)...));
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}
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ASTNodeWithTailArray(SourceRange source_range, Span<T const> values)
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: Base(move(source_range))
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, m_tail_size(values.size())
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{
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VERIFY(values.size() <= NumericLimits<u32>::max());
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for (size_t i = 0; i < values.size(); ++i)
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new (&tail_data()[i]) T(values[i]);
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}
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private:
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T* tail_data() { return reinterpret_cast<T*>(reinterpret_cast<uintptr_t>(this) + sizeof(Derived)); }
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u32 m_tail_size { 0 };
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};
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class Statement : public ASTNode {
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public:
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explicit Statement(SourceRange source_range)
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: ASTNode(source_range)
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{
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}
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};
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// 14.13 Labelled Statements, https://tc39.es/ecma262/#sec-labelled-statements
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class LabelledStatement : public Statement {
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public:
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LabelledStatement(SourceRange source_range, FlyString label, NonnullRefPtr<Statement> labelled_item)
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: Statement(source_range)
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, m_label(move(label))
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, m_labelled_item(move(labelled_item))
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{
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}
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virtual Completion execute(Interpreter&) const override;
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virtual void dump(int indent) const override;
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virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
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virtual Bytecode::CodeGenerationErrorOr<void> generate_labelled_evaluation(Bytecode::Generator&, Vector<FlyString> const&) const;
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FlyString const& label() const { return m_label; }
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FlyString& label() { return m_label; }
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NonnullRefPtr<Statement> const& labelled_item() const { return m_labelled_item; }
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NonnullRefPtr<Statement>& labelled_item() { return m_labelled_item; }
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private:
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virtual bool is_labelled_statement() const final { return true; }
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FlyString m_label;
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NonnullRefPtr<Statement> m_labelled_item;
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};
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class LabelableStatement : public Statement {
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public:
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using Statement::Statement;
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Vector<FlyString> const& labels() const { return m_labels; }
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virtual void add_label(FlyString string) { m_labels.append(move(string)); }
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protected:
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Vector<FlyString> m_labels;
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};
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class IterationStatement : public Statement {
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public:
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using Statement::Statement;
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virtual Completion loop_evaluation(Interpreter&, Vector<FlyString> const&) const = 0;
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virtual Bytecode::CodeGenerationErrorOr<void> generate_labelled_evaluation(Bytecode::Generator&, Vector<FlyString> const&) const;
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private:
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virtual bool is_iteration_statement() const final { return true; }
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};
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class EmptyStatement final : public Statement {
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public:
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explicit EmptyStatement(SourceRange source_range)
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: Statement(source_range)
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{
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}
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Completion execute(Interpreter&) const override;
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virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
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};
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class ErrorStatement final : public Statement {
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public:
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explicit ErrorStatement(SourceRange source_range)
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: Statement(source_range)
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{
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}
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Completion execute(Interpreter&) const override { return {}; }
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};
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class ExpressionStatement final : public Statement {
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public:
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ExpressionStatement(SourceRange source_range, NonnullRefPtr<Expression> expression)
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: Statement(source_range)
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, m_expression(move(expression))
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{
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}
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virtual Completion execute(Interpreter&) const override;
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virtual void dump(int indent) const override;
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virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
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Expression const& expression() const { return m_expression; };
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private:
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virtual bool is_expression_statement() const override { return true; }
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NonnullRefPtr<Expression> m_expression;
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};
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template<typename Func, typename... Args>
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concept ThrowCompletionOrVoidFunction = requires(Func func, Args... args) {
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{
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func(args...)
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}
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-> SameAs<ThrowCompletionOr<void>>;
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};
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template<typename... Args>
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class ThrowCompletionOrVoidCallback : public Function<ThrowCompletionOr<void>(Args...)> {
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public:
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template<typename CallableType>
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ThrowCompletionOrVoidCallback(CallableType&& callable)
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requires(VoidFunction<CallableType, Args...>)
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: Function<ThrowCompletionOr<void>(Args...)>([callable = forward<CallableType>(callable)](Args... args) {
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callable(args...);
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return ThrowCompletionOr<void> {};
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})
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{
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}
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template<typename CallableType>
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ThrowCompletionOrVoidCallback(CallableType&& callable)
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requires(ThrowCompletionOrVoidFunction<CallableType, Args...>)
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: Function<ThrowCompletionOr<void>(Args...)>(forward<CallableType>(callable))
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{
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}
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};
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class ScopeNode : public Statement {
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public:
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template<typename T, typename... Args>
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T& append(SourceRange range, Args&&... args)
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{
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auto child = create_ast_node<T>(range, forward<Args>(args)...);
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m_children.append(move(child));
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return static_cast<T&>(m_children.last());
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}
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void append(NonnullRefPtr<Statement> child)
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{
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m_children.append(move(child));
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}
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void shrink_to_fit()
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{
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m_children.shrink_to_fit();
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m_lexical_declarations.shrink_to_fit();
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m_var_declarations.shrink_to_fit();
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m_functions_hoistable_with_annexB_extension.shrink_to_fit();
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}
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NonnullRefPtrVector<Statement> const& children() const { return m_children; }
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virtual void dump(int indent) const override;
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virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
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Completion evaluate_statements(Interpreter&) const;
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void add_var_scoped_declaration(NonnullRefPtr<Declaration> variables);
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void add_lexical_declaration(NonnullRefPtr<Declaration> variables);
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void add_hoisted_function(NonnullRefPtr<FunctionDeclaration> declaration);
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[[nodiscard]] bool has_lexical_declarations() const { return !m_lexical_declarations.is_empty(); }
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[[nodiscard]] bool has_var_declarations() const { return !m_var_declarations.is_empty(); }
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[[nodiscard]] size_t var_declaration_count() const { return m_var_declarations.size(); }
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[[nodiscard]] size_t lexical_declaration_count() const { return m_lexical_declarations.size(); }
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ThrowCompletionOr<void> for_each_lexically_scoped_declaration(ThrowCompletionOrVoidCallback<Declaration const&>&& callback) const;
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ThrowCompletionOr<void> for_each_lexically_declared_name(ThrowCompletionOrVoidCallback<FlyString const&>&& callback) const;
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ThrowCompletionOr<void> for_each_var_declared_name(ThrowCompletionOrVoidCallback<FlyString const&>&& callback) const;
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ThrowCompletionOr<void> for_each_var_function_declaration_in_reverse_order(ThrowCompletionOrVoidCallback<FunctionDeclaration const&>&& callback) const;
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ThrowCompletionOr<void> for_each_var_scoped_variable_declaration(ThrowCompletionOrVoidCallback<VariableDeclaration const&>&& callback) const;
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void block_declaration_instantiation(Interpreter&, Environment*) const;
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ThrowCompletionOr<void> for_each_function_hoistable_with_annexB_extension(ThrowCompletionOrVoidCallback<FunctionDeclaration&>&& callback) const;
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protected:
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explicit ScopeNode(SourceRange source_range)
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: Statement(source_range)
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{
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}
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private:
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virtual bool is_scope_node() const final { return true; }
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NonnullRefPtrVector<Statement> m_children;
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NonnullRefPtrVector<Declaration> m_lexical_declarations;
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NonnullRefPtrVector<Declaration> m_var_declarations;
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NonnullRefPtrVector<FunctionDeclaration> m_functions_hoistable_with_annexB_extension;
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};
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// ImportEntry Record, https://tc39.es/ecma262/#table-importentry-record-fields
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struct ImportEntry {
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FlyString import_name; // [[ImportName]] if a String
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FlyString local_name; // [[LocalName]]
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bool is_namespace { false }; // [[ImportName]] if `namespace-object`
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ImportEntry(FlyString import_name_, FlyString local_name_, bool is_namespace_ = false)
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: import_name(move(import_name_))
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, local_name(move(local_name_))
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, is_namespace(is_namespace_)
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{
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VERIFY(!is_namespace || import_name.is_null());
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}
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ModuleRequest const& module_request() const
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{
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VERIFY(m_module_request);
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return *m_module_request;
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}
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private:
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friend class ImportStatement;
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ModuleRequest* m_module_request; // [[ModuleRequest]]
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};
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class ImportStatement final : public Statement {
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public:
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explicit ImportStatement(SourceRange source_range, ModuleRequest from_module, Vector<ImportEntry> entries = {})
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: Statement(source_range)
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, m_module_request(move(from_module))
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, m_entries(move(entries))
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{
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for (auto& entry : m_entries)
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entry.m_module_request = &m_module_request;
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}
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virtual Completion execute(Interpreter&) const override;
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virtual void dump(int indent) const override;
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bool has_bound_name(FlyString const& name) const;
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Vector<ImportEntry> const& entries() const { return m_entries; }
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ModuleRequest const& module_request() const { return m_module_request; }
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ModuleRequest& module_request() { return m_module_request; }
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private:
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ModuleRequest m_module_request;
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Vector<ImportEntry> m_entries;
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};
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// ExportEntry Record, https://tc39.es/ecma262/#table-exportentry-records
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struct ExportEntry {
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enum class Kind {
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NamedExport,
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ModuleRequestAll,
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ModuleRequestAllButDefault,
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// EmptyNamedExport is a special type for export {} from "module",
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// which should import the module without getting any of the exports
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// however we don't want give it a fake export name which may get
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// duplicates
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EmptyNamedExport,
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} kind;
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FlyString export_name; // [[ExportName]]
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FlyString local_or_import_name; // Either [[ImportName]] or [[LocalName]]
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ExportEntry(Kind export_kind, FlyString export_name_, FlyString local_or_import_name_)
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: kind(export_kind)
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, export_name(move(export_name_))
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, local_or_import_name(move(local_or_import_name_))
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{
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}
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bool is_module_request() const
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{
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return m_module_request != nullptr;
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}
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static ExportEntry indirect_export_entry(ModuleRequest const& module_request, FlyString export_name, FlyString import_name)
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{
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ExportEntry entry { Kind::NamedExport, move(export_name), move(import_name) };
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entry.m_module_request = &module_request;
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return entry;
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}
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ModuleRequest const& module_request() const
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{
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VERIFY(m_module_request);
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return *m_module_request;
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}
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private:
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ModuleRequest const* m_module_request { nullptr }; // [[ModuleRequest]]
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friend class ExportStatement;
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public:
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static ExportEntry named_export(FlyString export_name, FlyString local_name)
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{
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return ExportEntry { Kind::NamedExport, move(export_name), move(local_name) };
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}
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static ExportEntry all_but_default_entry()
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{
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return ExportEntry { Kind::ModuleRequestAllButDefault, {}, {} };
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}
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static ExportEntry all_module_request(FlyString export_name)
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{
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return ExportEntry { Kind::ModuleRequestAll, move(export_name), {} };
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}
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static ExportEntry empty_named_export()
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{
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return ExportEntry { Kind::EmptyNamedExport, {}, {} };
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}
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};
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class ExportStatement final : public Statement {
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public:
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static FlyString local_name_for_default;
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ExportStatement(SourceRange source_range, RefPtr<ASTNode> statement, Vector<ExportEntry> entries, bool is_default_export, ModuleRequest module_request)
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: Statement(source_range)
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, m_statement(move(statement))
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, m_entries(move(entries))
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, m_is_default_export(is_default_export)
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, m_module_request(move(module_request))
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{
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if (!m_module_request.module_specifier.is_null()) {
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for (auto& entry : m_entries)
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entry.m_module_request = &m_module_request;
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}
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}
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virtual Completion execute(Interpreter&) const override;
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virtual void dump(int indent) const override;
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bool has_export(FlyString const& export_name) const;
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bool has_statement() const { return m_statement; }
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Vector<ExportEntry> const& entries() const { return m_entries; }
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bool is_default_export() const { return m_is_default_export; }
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ASTNode const& statement() const
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{
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VERIFY(m_statement);
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return *m_statement;
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}
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ModuleRequest& module_request()
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{
|
|
VERIFY(!m_module_request.module_specifier.is_null());
|
|
return m_module_request;
|
|
}
|
|
|
|
private:
|
|
RefPtr<ASTNode> m_statement;
|
|
Vector<ExportEntry> m_entries;
|
|
bool m_is_default_export { false };
|
|
ModuleRequest m_module_request;
|
|
};
|
|
|
|
class Program final : public ScopeNode {
|
|
public:
|
|
enum class Type {
|
|
Script,
|
|
Module
|
|
};
|
|
|
|
explicit Program(SourceRange source_range, Type program_type)
|
|
: ScopeNode(source_range)
|
|
, m_type(program_type)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
|
|
bool is_strict_mode() const { return m_is_strict_mode; }
|
|
void set_strict_mode() { m_is_strict_mode = true; }
|
|
|
|
Type type() const { return m_type; }
|
|
|
|
void append_import(NonnullRefPtr<ImportStatement> import_statement)
|
|
{
|
|
m_imports.append(import_statement);
|
|
append(import_statement);
|
|
}
|
|
|
|
void append_export(NonnullRefPtr<ExportStatement> export_statement)
|
|
{
|
|
m_exports.append(export_statement);
|
|
append(export_statement);
|
|
}
|
|
|
|
NonnullRefPtrVector<ImportStatement> const& imports() const { return m_imports; }
|
|
NonnullRefPtrVector<ExportStatement> const& exports() const { return m_exports; }
|
|
|
|
NonnullRefPtrVector<ImportStatement>& imports() { return m_imports; }
|
|
NonnullRefPtrVector<ExportStatement>& exports() { return m_exports; }
|
|
|
|
bool has_top_level_await() const { return m_has_top_level_await; }
|
|
void set_has_top_level_await() { m_has_top_level_await = true; }
|
|
|
|
ThrowCompletionOr<void> global_declaration_instantiation(Interpreter&, GlobalEnvironment&) const;
|
|
|
|
private:
|
|
virtual bool is_program() const override { return true; }
|
|
|
|
bool m_is_strict_mode { false };
|
|
Type m_type { Type::Script };
|
|
|
|
NonnullRefPtrVector<ImportStatement> m_imports;
|
|
NonnullRefPtrVector<ExportStatement> m_exports;
|
|
bool m_has_top_level_await { false };
|
|
};
|
|
|
|
class BlockStatement final : public ScopeNode {
|
|
public:
|
|
explicit BlockStatement(SourceRange source_range)
|
|
: ScopeNode(source_range)
|
|
{
|
|
}
|
|
Completion execute(Interpreter&) const override;
|
|
};
|
|
|
|
class FunctionBody final : public ScopeNode {
|
|
public:
|
|
explicit FunctionBody(SourceRange source_range)
|
|
: ScopeNode(source_range)
|
|
{
|
|
}
|
|
|
|
void set_strict_mode() { m_in_strict_mode = true; }
|
|
|
|
bool in_strict_mode() const { return m_in_strict_mode; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
|
|
private:
|
|
bool m_in_strict_mode { false };
|
|
};
|
|
|
|
class Expression : public ASTNode {
|
|
public:
|
|
explicit Expression(SourceRange source_range)
|
|
: ASTNode(source_range)
|
|
{
|
|
}
|
|
virtual ThrowCompletionOr<Reference> to_reference(Interpreter&) const;
|
|
};
|
|
|
|
class Declaration : public Statement {
|
|
public:
|
|
explicit Declaration(SourceRange source_range)
|
|
: Statement(source_range)
|
|
{
|
|
}
|
|
|
|
virtual ThrowCompletionOr<void> for_each_bound_name(ThrowCompletionOrVoidCallback<FlyString const&>&& callback) const = 0;
|
|
|
|
// 8.1.3 Static Semantics: IsConstantDeclaration, https://tc39.es/ecma262/#sec-static-semantics-isconstantdeclaration
|
|
virtual bool is_constant_declaration() const { return false; }
|
|
|
|
virtual bool is_lexical_declaration() const { return false; }
|
|
};
|
|
|
|
class ErrorDeclaration final : public Declaration {
|
|
public:
|
|
explicit ErrorDeclaration(SourceRange source_range)
|
|
: Declaration(source_range)
|
|
{
|
|
}
|
|
Completion execute(Interpreter&) const override { return {}; }
|
|
|
|
ThrowCompletionOr<void> for_each_bound_name(ThrowCompletionOrVoidCallback<FlyString const&>&&) const override
|
|
{
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
};
|
|
|
|
struct BindingPattern : RefCounted<BindingPattern> {
|
|
// This covers both BindingProperty and BindingElement, hence the more generic name
|
|
struct BindingEntry {
|
|
// If this entry represents a BindingElement, then name will be Empty
|
|
Variant<NonnullRefPtr<Identifier>, NonnullRefPtr<Expression>, Empty> name {};
|
|
Variant<NonnullRefPtr<Identifier>, NonnullRefPtr<BindingPattern>, NonnullRefPtr<MemberExpression>, Empty> alias {};
|
|
RefPtr<Expression> initializer {};
|
|
bool is_rest { false };
|
|
|
|
bool is_elision() const { return name.has<Empty>() && alias.has<Empty>(); }
|
|
};
|
|
|
|
enum class Kind {
|
|
Array,
|
|
Object,
|
|
};
|
|
|
|
void dump(int indent) const;
|
|
|
|
ThrowCompletionOr<void> for_each_bound_name(ThrowCompletionOrVoidCallback<FlyString const&>&& callback) const;
|
|
|
|
bool contains_expression() const;
|
|
|
|
Vector<BindingEntry> entries;
|
|
Kind kind { Kind::Object };
|
|
};
|
|
|
|
struct FunctionParameter {
|
|
Variant<FlyString, NonnullRefPtr<BindingPattern>> binding;
|
|
RefPtr<Expression> default_value;
|
|
bool is_rest { false };
|
|
};
|
|
|
|
class FunctionNode {
|
|
public:
|
|
FlyString const& name() const { return m_name; }
|
|
DeprecatedString const& source_text() const { return m_source_text; }
|
|
Statement const& body() const { return *m_body; }
|
|
Vector<FunctionParameter> const& parameters() const { return m_parameters; };
|
|
i32 function_length() const { return m_function_length; }
|
|
bool is_strict_mode() const { return m_is_strict_mode; }
|
|
bool might_need_arguments_object() const { return m_might_need_arguments_object; }
|
|
bool contains_direct_call_to_eval() const { return m_contains_direct_call_to_eval; }
|
|
bool is_arrow_function() const { return m_is_arrow_function; }
|
|
FunctionKind kind() const { return m_kind; }
|
|
|
|
protected:
|
|
FunctionNode(FlyString name, DeprecatedString source_text, NonnullRefPtr<Statement> body, Vector<FunctionParameter> parameters, i32 function_length, FunctionKind kind, bool is_strict_mode, bool might_need_arguments_object, bool contains_direct_call_to_eval, bool is_arrow_function)
|
|
: m_name(move(name))
|
|
, m_source_text(move(source_text))
|
|
, m_body(move(body))
|
|
, m_parameters(move(parameters))
|
|
, m_function_length(function_length)
|
|
, m_kind(kind)
|
|
, m_is_strict_mode(is_strict_mode)
|
|
, m_might_need_arguments_object(might_need_arguments_object)
|
|
, m_contains_direct_call_to_eval(contains_direct_call_to_eval)
|
|
, m_is_arrow_function(is_arrow_function)
|
|
{
|
|
if (m_is_arrow_function)
|
|
VERIFY(!m_might_need_arguments_object);
|
|
}
|
|
|
|
void dump(int indent, DeprecatedString const& class_name) const;
|
|
|
|
private:
|
|
FlyString m_name;
|
|
DeprecatedString m_source_text;
|
|
NonnullRefPtr<Statement> m_body;
|
|
Vector<FunctionParameter> const m_parameters;
|
|
const i32 m_function_length;
|
|
FunctionKind m_kind;
|
|
bool m_is_strict_mode : 1 { false };
|
|
bool m_might_need_arguments_object : 1 { false };
|
|
bool m_contains_direct_call_to_eval : 1 { false };
|
|
bool m_is_arrow_function : 1 { false };
|
|
};
|
|
|
|
class FunctionDeclaration final
|
|
: public Declaration
|
|
, public FunctionNode {
|
|
public:
|
|
static bool must_have_name() { return true; }
|
|
|
|
FunctionDeclaration(SourceRange source_range, FlyString const& name, DeprecatedString source_text, NonnullRefPtr<Statement> body, Vector<FunctionParameter> parameters, i32 function_length, FunctionKind kind, bool is_strict_mode, bool might_need_arguments_object, bool contains_direct_call_to_eval)
|
|
: Declaration(source_range)
|
|
, FunctionNode(name, move(source_text), move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, contains_direct_call_to_eval, false)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
virtual ThrowCompletionOr<void> for_each_bound_name(ThrowCompletionOrVoidCallback<FlyString const&>&& callback) const override;
|
|
|
|
virtual bool is_function_declaration() const override { return true; }
|
|
|
|
void set_should_do_additional_annexB_steps() { m_is_hoisted = true; }
|
|
|
|
private:
|
|
bool m_is_hoisted { false };
|
|
};
|
|
|
|
class FunctionExpression final
|
|
: public Expression
|
|
, public FunctionNode {
|
|
public:
|
|
static bool must_have_name() { return false; }
|
|
|
|
FunctionExpression(SourceRange source_range, FlyString const& name, DeprecatedString source_text, NonnullRefPtr<Statement> body, Vector<FunctionParameter> parameters, i32 function_length, FunctionKind kind, bool is_strict_mode, bool might_need_arguments_object, bool contains_direct_call_to_eval, bool is_arrow_function = false)
|
|
: Expression(source_range)
|
|
, FunctionNode(name, move(source_text), move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, contains_direct_call_to_eval, is_arrow_function)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
bool has_name() const { return !name().is_empty(); }
|
|
|
|
Value instantiate_ordinary_function_expression(Interpreter&, FlyString given_name) const;
|
|
|
|
private:
|
|
virtual bool is_function_expression() const override { return true; }
|
|
};
|
|
|
|
class ErrorExpression final : public Expression {
|
|
public:
|
|
explicit ErrorExpression(SourceRange source_range)
|
|
: Expression(source_range)
|
|
{
|
|
}
|
|
|
|
Completion execute(Interpreter&) const override { return {}; }
|
|
};
|
|
|
|
class YieldExpression final : public Expression {
|
|
public:
|
|
explicit YieldExpression(SourceRange source_range, RefPtr<Expression> argument, bool is_yield_from)
|
|
: Expression(source_range)
|
|
, m_argument(move(argument))
|
|
, m_is_yield_from(is_yield_from)
|
|
{
|
|
}
|
|
|
|
Expression const* argument() const { return m_argument; }
|
|
bool is_yield_from() const { return m_is_yield_from; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
RefPtr<Expression> m_argument;
|
|
bool m_is_yield_from { false };
|
|
};
|
|
|
|
class AwaitExpression final : public Expression {
|
|
public:
|
|
explicit AwaitExpression(SourceRange source_range, NonnullRefPtr<Expression> argument)
|
|
: Expression(source_range)
|
|
, m_argument(move(argument))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_argument;
|
|
};
|
|
|
|
class ReturnStatement final : public Statement {
|
|
public:
|
|
explicit ReturnStatement(SourceRange source_range, RefPtr<Expression> argument)
|
|
: Statement(source_range)
|
|
, m_argument(move(argument))
|
|
{
|
|
}
|
|
|
|
Expression const* argument() const { return m_argument; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
RefPtr<Expression> m_argument;
|
|
};
|
|
|
|
class IfStatement final : public Statement {
|
|
public:
|
|
IfStatement(SourceRange source_range, NonnullRefPtr<Expression> predicate, NonnullRefPtr<Statement> consequent, RefPtr<Statement> alternate)
|
|
: Statement(source_range)
|
|
, m_predicate(move(predicate))
|
|
, m_consequent(move(consequent))
|
|
, m_alternate(move(alternate))
|
|
{
|
|
}
|
|
|
|
Expression const& predicate() const { return *m_predicate; }
|
|
Statement const& consequent() const { return *m_consequent; }
|
|
Statement const* alternate() const { return m_alternate; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_predicate;
|
|
NonnullRefPtr<Statement> m_consequent;
|
|
RefPtr<Statement> m_alternate;
|
|
};
|
|
|
|
class WhileStatement final : public IterationStatement {
|
|
public:
|
|
WhileStatement(SourceRange source_range, NonnullRefPtr<Expression> test, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(source_range)
|
|
, m_test(move(test))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
Expression const& test() const { return *m_test; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Completion loop_evaluation(Interpreter&, Vector<FlyString> const&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_labelled_evaluation(Bytecode::Generator&, Vector<FlyString> const&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_test;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class DoWhileStatement final : public IterationStatement {
|
|
public:
|
|
DoWhileStatement(SourceRange source_range, NonnullRefPtr<Expression> test, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(source_range)
|
|
, m_test(move(test))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
Expression const& test() const { return *m_test; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Completion loop_evaluation(Interpreter&, Vector<FlyString> const&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_labelled_evaluation(Bytecode::Generator&, Vector<FlyString> const&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_test;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class WithStatement final : public Statement {
|
|
public:
|
|
WithStatement(SourceRange source_range, NonnullRefPtr<Expression> object, NonnullRefPtr<Statement> body)
|
|
: Statement(source_range)
|
|
, m_object(move(object))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
Expression const& object() const { return *m_object; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_object;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class ForStatement final : public IterationStatement {
|
|
public:
|
|
ForStatement(SourceRange source_range, RefPtr<ASTNode> init, RefPtr<Expression> test, RefPtr<Expression> update, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(source_range)
|
|
, m_init(move(init))
|
|
, m_test(move(test))
|
|
, m_update(move(update))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
ASTNode const* init() const { return m_init; }
|
|
Expression const* test() const { return m_test; }
|
|
Expression const* update() const { return m_update; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Completion loop_evaluation(Interpreter&, Vector<FlyString> const&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_labelled_evaluation(Bytecode::Generator&, Vector<FlyString> const&) const override;
|
|
|
|
private:
|
|
RefPtr<ASTNode> m_init;
|
|
RefPtr<Expression> m_test;
|
|
RefPtr<Expression> m_update;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class ForInStatement final : public IterationStatement {
|
|
public:
|
|
ForInStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(source_range)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
auto const& lhs() const { return m_lhs; }
|
|
Expression const& rhs() const { return *m_rhs; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_labelled_evaluation(Bytecode::Generator&, Vector<FlyString> const&) const override;
|
|
virtual Completion loop_evaluation(Interpreter&, Vector<FlyString> const&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class ForOfStatement final : public IterationStatement {
|
|
public:
|
|
ForOfStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(source_range)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
auto const& lhs() const { return m_lhs; }
|
|
Expression const& rhs() const { return *m_rhs; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_labelled_evaluation(Bytecode::Generator&, Vector<FlyString> const&) const override;
|
|
virtual Completion loop_evaluation(Interpreter&, Vector<FlyString> const&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class ForAwaitOfStatement final : public IterationStatement {
|
|
public:
|
|
ForAwaitOfStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(source_range)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Completion loop_evaluation(Interpreter&, Vector<FlyString> const&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
enum class BinaryOp {
|
|
Addition,
|
|
Subtraction,
|
|
Multiplication,
|
|
Division,
|
|
Modulo,
|
|
Exponentiation,
|
|
StrictlyEquals,
|
|
StrictlyInequals,
|
|
LooselyEquals,
|
|
LooselyInequals,
|
|
GreaterThan,
|
|
GreaterThanEquals,
|
|
LessThan,
|
|
LessThanEquals,
|
|
BitwiseAnd,
|
|
BitwiseOr,
|
|
BitwiseXor,
|
|
LeftShift,
|
|
RightShift,
|
|
UnsignedRightShift,
|
|
In,
|
|
InstanceOf,
|
|
};
|
|
|
|
class BinaryExpression final : public Expression {
|
|
public:
|
|
BinaryExpression(SourceRange source_range, BinaryOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
BinaryOp m_op;
|
|
NonnullRefPtr<Expression> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
};
|
|
|
|
enum class LogicalOp {
|
|
And,
|
|
Or,
|
|
NullishCoalescing,
|
|
};
|
|
|
|
class LogicalExpression final : public Expression {
|
|
public:
|
|
LogicalExpression(SourceRange source_range, LogicalOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
LogicalOp m_op;
|
|
NonnullRefPtr<Expression> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
};
|
|
|
|
enum class UnaryOp {
|
|
BitwiseNot,
|
|
Not,
|
|
Plus,
|
|
Minus,
|
|
Typeof,
|
|
Void,
|
|
Delete,
|
|
};
|
|
|
|
class UnaryExpression final : public Expression {
|
|
public:
|
|
UnaryExpression(SourceRange source_range, UnaryOp op, NonnullRefPtr<Expression> lhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
UnaryOp m_op;
|
|
NonnullRefPtr<Expression> m_lhs;
|
|
};
|
|
|
|
class SequenceExpression final : public Expression {
|
|
public:
|
|
SequenceExpression(SourceRange source_range, NonnullRefPtrVector<Expression> expressions)
|
|
: Expression(source_range)
|
|
, m_expressions(move(expressions))
|
|
{
|
|
VERIFY(m_expressions.size() >= 2);
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtrVector<Expression> m_expressions;
|
|
};
|
|
|
|
class Literal : public Expression {
|
|
protected:
|
|
explicit Literal(SourceRange source_range)
|
|
: Expression(source_range)
|
|
{
|
|
}
|
|
};
|
|
|
|
class BooleanLiteral final : public Literal {
|
|
public:
|
|
explicit BooleanLiteral(SourceRange source_range, bool value)
|
|
: Literal(source_range)
|
|
, m_value(value)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
bool m_value { false };
|
|
};
|
|
|
|
class NumericLiteral final : public Literal {
|
|
public:
|
|
explicit NumericLiteral(SourceRange source_range, double value)
|
|
: Literal(source_range)
|
|
, m_value(value)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
Value m_value;
|
|
};
|
|
|
|
class BigIntLiteral final : public Literal {
|
|
public:
|
|
explicit BigIntLiteral(SourceRange source_range, DeprecatedString value)
|
|
: Literal(source_range)
|
|
, m_value(move(value))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
DeprecatedString m_value;
|
|
};
|
|
|
|
class StringLiteral final : public Literal {
|
|
public:
|
|
explicit StringLiteral(SourceRange source_range, DeprecatedString value)
|
|
: Literal(source_range)
|
|
, m_value(move(value))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
StringView value() const { return m_value; }
|
|
|
|
private:
|
|
virtual bool is_string_literal() const override { return true; }
|
|
|
|
DeprecatedString m_value;
|
|
};
|
|
|
|
class NullLiteral final : public Literal {
|
|
public:
|
|
explicit NullLiteral(SourceRange source_range)
|
|
: Literal(source_range)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
};
|
|
|
|
class RegExpLiteral final : public Literal {
|
|
public:
|
|
RegExpLiteral(SourceRange source_range, regex::Parser::Result parsed_regex, DeprecatedString parsed_pattern, regex::RegexOptions<ECMAScriptFlags> parsed_flags, DeprecatedString pattern, DeprecatedString flags)
|
|
: Literal(source_range)
|
|
, m_parsed_regex(move(parsed_regex))
|
|
, m_parsed_pattern(move(parsed_pattern))
|
|
, m_parsed_flags(move(parsed_flags))
|
|
, m_pattern(move(pattern))
|
|
, m_flags(move(flags))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
regex::Parser::Result const& parsed_regex() const { return m_parsed_regex; }
|
|
DeprecatedString const& parsed_pattern() const { return m_parsed_pattern; }
|
|
regex::RegexOptions<ECMAScriptFlags> const& parsed_flags() const { return m_parsed_flags; }
|
|
DeprecatedString const& pattern() const { return m_pattern; }
|
|
DeprecatedString const& flags() const { return m_flags; }
|
|
|
|
private:
|
|
regex::Parser::Result m_parsed_regex;
|
|
DeprecatedString m_parsed_pattern;
|
|
regex::RegexOptions<ECMAScriptFlags> m_parsed_flags;
|
|
DeprecatedString m_pattern;
|
|
DeprecatedString m_flags;
|
|
};
|
|
|
|
class Identifier final : public Expression {
|
|
public:
|
|
explicit Identifier(SourceRange source_range, FlyString string)
|
|
: Expression(source_range)
|
|
, m_string(move(string))
|
|
{
|
|
}
|
|
|
|
FlyString const& string() const { return m_string; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual ThrowCompletionOr<Reference> to_reference(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
virtual bool is_identifier() const override { return true; }
|
|
|
|
FlyString m_string;
|
|
mutable EnvironmentCoordinate m_cached_environment_coordinate;
|
|
};
|
|
|
|
class PrivateIdentifier final : public Expression {
|
|
public:
|
|
explicit PrivateIdentifier(SourceRange source_range, FlyString string)
|
|
: Expression(source_range)
|
|
, m_string(move(string))
|
|
{
|
|
}
|
|
|
|
FlyString const& string() const { return m_string; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
virtual bool is_private_identifier() const override { return true; }
|
|
|
|
private:
|
|
FlyString m_string;
|
|
};
|
|
|
|
class ClassElement : public ASTNode {
|
|
public:
|
|
ClassElement(SourceRange source_range, bool is_static)
|
|
: ASTNode(source_range)
|
|
, m_is_static(is_static)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
|
|
enum class ElementKind {
|
|
Method,
|
|
Field,
|
|
StaticInitializer,
|
|
};
|
|
|
|
virtual ElementKind class_element_kind() const = 0;
|
|
bool is_static() const { return m_is_static; }
|
|
|
|
// We use the Completion also as a ClassStaticBlockDefinition Record.
|
|
using ClassValue = Variant<ClassFieldDefinition, Completion, PrivateElement>;
|
|
virtual ThrowCompletionOr<ClassValue> class_element_evaluation(Interpreter&, Object& home_object) const = 0;
|
|
|
|
virtual Optional<FlyString> private_bound_identifier() const { return {}; };
|
|
|
|
private:
|
|
bool m_is_static { false };
|
|
};
|
|
|
|
class ClassMethod final : public ClassElement {
|
|
public:
|
|
enum class Kind {
|
|
Method,
|
|
Getter,
|
|
Setter,
|
|
};
|
|
|
|
ClassMethod(SourceRange source_range, NonnullRefPtr<Expression> key, NonnullRefPtr<FunctionExpression> function, Kind kind, bool is_static)
|
|
: ClassElement(source_range, is_static)
|
|
, m_key(move(key))
|
|
, m_function(move(function))
|
|
, m_kind(kind)
|
|
{
|
|
}
|
|
|
|
Expression const& key() const { return *m_key; }
|
|
Kind kind() const { return m_kind; }
|
|
virtual ElementKind class_element_kind() const override { return ElementKind::Method; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual ThrowCompletionOr<ClassValue> class_element_evaluation(Interpreter&, Object& home_object) const override;
|
|
virtual Optional<FlyString> private_bound_identifier() const override;
|
|
|
|
private:
|
|
virtual bool is_class_method() const override { return true; }
|
|
NonnullRefPtr<Expression> m_key;
|
|
NonnullRefPtr<FunctionExpression> m_function;
|
|
Kind m_kind;
|
|
};
|
|
|
|
class ClassField final : public ClassElement {
|
|
public:
|
|
ClassField(SourceRange source_range, NonnullRefPtr<Expression> key, RefPtr<Expression> init, bool contains_direct_call_to_eval, bool is_static)
|
|
: ClassElement(source_range, is_static)
|
|
, m_key(move(key))
|
|
, m_initializer(move(init))
|
|
, m_contains_direct_call_to_eval(contains_direct_call_to_eval)
|
|
{
|
|
}
|
|
|
|
Expression const& key() const { return *m_key; }
|
|
RefPtr<Expression> const& initializer() const { return m_initializer; }
|
|
RefPtr<Expression>& initializer() { return m_initializer; }
|
|
|
|
virtual ElementKind class_element_kind() const override { return ElementKind::Field; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual ThrowCompletionOr<ClassValue> class_element_evaluation(Interpreter&, Object& home_object) const override;
|
|
virtual Optional<FlyString> private_bound_identifier() const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_key;
|
|
RefPtr<Expression> m_initializer;
|
|
bool m_contains_direct_call_to_eval { false };
|
|
};
|
|
|
|
class StaticInitializer final : public ClassElement {
|
|
public:
|
|
StaticInitializer(SourceRange source_range, NonnullRefPtr<FunctionBody> function_body, bool contains_direct_call_to_eval)
|
|
: ClassElement(source_range, true)
|
|
, m_function_body(move(function_body))
|
|
, m_contains_direct_call_to_eval(contains_direct_call_to_eval)
|
|
{
|
|
}
|
|
|
|
virtual ElementKind class_element_kind() const override { return ElementKind::StaticInitializer; }
|
|
virtual ThrowCompletionOr<ClassValue> class_element_evaluation(Interpreter&, Object& home_object) const override;
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<FunctionBody> m_function_body;
|
|
bool m_contains_direct_call_to_eval { false };
|
|
};
|
|
|
|
class SuperExpression final : public Expression {
|
|
public:
|
|
explicit SuperExpression(SourceRange source_range)
|
|
: Expression(source_range)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
virtual bool is_super_expression() const override { return true; }
|
|
};
|
|
|
|
class ClassExpression final : public Expression {
|
|
public:
|
|
ClassExpression(SourceRange source_range, DeprecatedString name, DeprecatedString source_text, RefPtr<FunctionExpression> constructor, RefPtr<Expression> super_class, NonnullRefPtrVector<ClassElement> elements)
|
|
: Expression(source_range)
|
|
, m_name(move(name))
|
|
, m_source_text(move(source_text))
|
|
, m_constructor(move(constructor))
|
|
, m_super_class(move(super_class))
|
|
, m_elements(move(elements))
|
|
{
|
|
}
|
|
|
|
StringView name() const { return m_name; }
|
|
DeprecatedString const& source_text() const { return m_source_text; }
|
|
RefPtr<FunctionExpression> constructor() const { return m_constructor; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
bool has_name() const { return !m_name.is_empty(); }
|
|
|
|
ThrowCompletionOr<ECMAScriptFunctionObject*> class_definition_evaluation(Interpreter&, FlyString const& binding_name = {}, FlyString const& class_name = {}) const;
|
|
|
|
private:
|
|
virtual bool is_class_expression() const override { return true; }
|
|
|
|
DeprecatedString m_name;
|
|
DeprecatedString m_source_text;
|
|
RefPtr<FunctionExpression> m_constructor;
|
|
RefPtr<Expression> m_super_class;
|
|
NonnullRefPtrVector<ClassElement> m_elements;
|
|
};
|
|
|
|
class ClassDeclaration final : public Declaration {
|
|
public:
|
|
ClassDeclaration(SourceRange source_range, NonnullRefPtr<ClassExpression> class_expression)
|
|
: Declaration(source_range)
|
|
, m_class_expression(move(class_expression))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
virtual ThrowCompletionOr<void> for_each_bound_name(ThrowCompletionOrVoidCallback<FlyString const&>&& callback) const override;
|
|
|
|
virtual bool is_lexical_declaration() const override { return true; }
|
|
|
|
StringView name() const { return m_class_expression->name(); }
|
|
|
|
private:
|
|
virtual bool is_class_declaration() const override { return true; }
|
|
|
|
friend ExportStatement;
|
|
|
|
NonnullRefPtr<ClassExpression> m_class_expression;
|
|
};
|
|
|
|
class SpreadExpression final : public Expression {
|
|
public:
|
|
explicit SpreadExpression(SourceRange source_range, NonnullRefPtr<Expression> target)
|
|
: Expression(source_range)
|
|
, m_target(move(target))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_target;
|
|
};
|
|
|
|
class ThisExpression final : public Expression {
|
|
public:
|
|
explicit ThisExpression(SourceRange source_range)
|
|
: Expression(source_range)
|
|
{
|
|
}
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
};
|
|
|
|
struct CallExpressionArgument {
|
|
NonnullRefPtr<Expression> value;
|
|
bool is_spread;
|
|
};
|
|
|
|
class CallExpression : public ASTNodeWithTailArray<CallExpression, Expression, CallExpressionArgument> {
|
|
friend class ASTNodeWithTailArray;
|
|
|
|
public:
|
|
using Argument = CallExpressionArgument;
|
|
|
|
static NonnullRefPtr<CallExpression> create(SourceRange, NonnullRefPtr<Expression> callee, Span<Argument const> arguments);
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
Expression const& callee() const { return m_callee; }
|
|
|
|
Span<Argument const> arguments() const { return tail_span(); }
|
|
|
|
protected:
|
|
CallExpression(SourceRange source_range, NonnullRefPtr<Expression> callee, Span<Argument const> arguments)
|
|
: ASTNodeWithTailArray(move(source_range), arguments)
|
|
, m_callee(move(callee))
|
|
{
|
|
}
|
|
|
|
private:
|
|
struct ThisAndCallee {
|
|
Value this_value;
|
|
Value callee;
|
|
};
|
|
ThrowCompletionOr<ThisAndCallee> compute_this_and_callee(Interpreter&, Reference const&) const;
|
|
|
|
protected:
|
|
virtual bool is_call_expression() const override { return true; }
|
|
|
|
Completion throw_type_error_for_callee(Interpreter&, Value callee_value, StringView call_type) const;
|
|
Optional<DeprecatedString> expression_string() const;
|
|
|
|
NonnullRefPtr<Expression> m_callee;
|
|
};
|
|
|
|
class NewExpression final : public CallExpression {
|
|
friend class ASTNodeWithTailArray;
|
|
|
|
public:
|
|
static NonnullRefPtr<NewExpression> create(SourceRange, NonnullRefPtr<Expression> callee, Span<Argument const> arguments);
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
|
|
virtual bool is_new_expression() const override { return true; }
|
|
|
|
private:
|
|
NewExpression(SourceRange source_range, NonnullRefPtr<Expression> callee, Span<Argument const> arguments)
|
|
: CallExpression(move(source_range), move(callee), arguments)
|
|
{
|
|
}
|
|
};
|
|
|
|
static_assert(sizeof(NewExpression) == sizeof(CallExpression), "Adding members to NewExpression will break CallExpression memory layout");
|
|
|
|
class SuperCall final : public Expression {
|
|
public:
|
|
// This is here to be able to make a constructor like
|
|
// constructor(...args) { super(...args); } which does not use @@iterator of %Array.prototype%.
|
|
enum class IsPartOfSyntheticConstructor {
|
|
No,
|
|
Yes,
|
|
};
|
|
|
|
SuperCall(SourceRange source_range, Vector<CallExpression::Argument> arguments)
|
|
: Expression(source_range)
|
|
, m_arguments(move(arguments))
|
|
, m_is_synthetic(IsPartOfSyntheticConstructor::No)
|
|
{
|
|
}
|
|
|
|
SuperCall(SourceRange source_range, IsPartOfSyntheticConstructor is_part_of_synthetic_constructor, CallExpression::Argument constructor_argument)
|
|
: Expression(source_range)
|
|
, m_arguments({ move(constructor_argument) })
|
|
, m_is_synthetic(IsPartOfSyntheticConstructor::Yes)
|
|
{
|
|
VERIFY(is_part_of_synthetic_constructor == IsPartOfSyntheticConstructor::Yes);
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
Vector<CallExpression::Argument> const m_arguments;
|
|
IsPartOfSyntheticConstructor const m_is_synthetic;
|
|
};
|
|
|
|
enum class AssignmentOp {
|
|
Assignment,
|
|
AdditionAssignment,
|
|
SubtractionAssignment,
|
|
MultiplicationAssignment,
|
|
DivisionAssignment,
|
|
ModuloAssignment,
|
|
ExponentiationAssignment,
|
|
BitwiseAndAssignment,
|
|
BitwiseOrAssignment,
|
|
BitwiseXorAssignment,
|
|
LeftShiftAssignment,
|
|
RightShiftAssignment,
|
|
UnsignedRightShiftAssignment,
|
|
AndAssignment,
|
|
OrAssignment,
|
|
NullishAssignment,
|
|
};
|
|
|
|
class AssignmentExpression final : public Expression {
|
|
public:
|
|
AssignmentExpression(SourceRange source_range, AssignmentOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
AssignmentExpression(SourceRange source_range, AssignmentOp op, NonnullRefPtr<BindingPattern> lhs, NonnullRefPtr<Expression> rhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
AssignmentOp m_op;
|
|
Variant<NonnullRefPtr<Expression>, NonnullRefPtr<BindingPattern>> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
};
|
|
|
|
enum class UpdateOp {
|
|
Increment,
|
|
Decrement,
|
|
};
|
|
|
|
class UpdateExpression final : public Expression {
|
|
public:
|
|
UpdateExpression(SourceRange source_range, UpdateOp op, NonnullRefPtr<Expression> argument, bool prefixed = false)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_argument(move(argument))
|
|
, m_prefixed(prefixed)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
virtual bool is_update_expression() const override { return true; }
|
|
|
|
UpdateOp m_op;
|
|
NonnullRefPtr<Expression> m_argument;
|
|
bool m_prefixed;
|
|
};
|
|
|
|
enum class DeclarationKind {
|
|
Var,
|
|
Let,
|
|
Const,
|
|
};
|
|
|
|
class VariableDeclarator final : public ASTNode {
|
|
public:
|
|
VariableDeclarator(SourceRange source_range, NonnullRefPtr<Identifier> id)
|
|
: ASTNode(source_range)
|
|
, m_target(move(id))
|
|
{
|
|
}
|
|
|
|
VariableDeclarator(SourceRange source_range, NonnullRefPtr<Identifier> target, RefPtr<Expression> init)
|
|
: ASTNode(source_range)
|
|
, m_target(move(target))
|
|
, m_init(move(init))
|
|
{
|
|
}
|
|
|
|
VariableDeclarator(SourceRange source_range, Variant<NonnullRefPtr<Identifier>, NonnullRefPtr<BindingPattern>> target, RefPtr<Expression> init)
|
|
: ASTNode(source_range)
|
|
, m_target(move(target))
|
|
, m_init(move(init))
|
|
{
|
|
}
|
|
|
|
auto& target() const { return m_target; }
|
|
Expression const* init() const { return m_init; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<Identifier>, NonnullRefPtr<BindingPattern>> m_target;
|
|
RefPtr<Expression> m_init;
|
|
};
|
|
|
|
class VariableDeclaration final : public Declaration {
|
|
public:
|
|
VariableDeclaration(SourceRange source_range, DeclarationKind declaration_kind, NonnullRefPtrVector<VariableDeclarator> declarations)
|
|
: Declaration(source_range)
|
|
, m_declaration_kind(declaration_kind)
|
|
, m_declarations(move(declarations))
|
|
{
|
|
}
|
|
|
|
DeclarationKind declaration_kind() const { return m_declaration_kind; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
NonnullRefPtrVector<VariableDeclarator> const& declarations() const { return m_declarations; }
|
|
|
|
virtual ThrowCompletionOr<void> for_each_bound_name(ThrowCompletionOrVoidCallback<FlyString const&>&& callback) const override;
|
|
|
|
virtual bool is_constant_declaration() const override { return m_declaration_kind == DeclarationKind::Const; };
|
|
|
|
virtual bool is_lexical_declaration() const override { return m_declaration_kind != DeclarationKind::Var; }
|
|
|
|
private:
|
|
virtual bool is_variable_declaration() const override { return true; }
|
|
|
|
DeclarationKind m_declaration_kind;
|
|
NonnullRefPtrVector<VariableDeclarator> m_declarations;
|
|
};
|
|
|
|
class ObjectProperty final : public ASTNode {
|
|
public:
|
|
enum class Type : u8 {
|
|
KeyValue,
|
|
Getter,
|
|
Setter,
|
|
Spread,
|
|
ProtoSetter,
|
|
};
|
|
|
|
ObjectProperty(SourceRange source_range, NonnullRefPtr<Expression> key, RefPtr<Expression> value, Type property_type, bool is_method)
|
|
: ASTNode(source_range)
|
|
, m_property_type(property_type)
|
|
, m_is_method(is_method)
|
|
, m_key(move(key))
|
|
, m_value(move(value))
|
|
{
|
|
}
|
|
|
|
Expression const& key() const { return m_key; }
|
|
Expression const& value() const
|
|
{
|
|
VERIFY(m_value);
|
|
return *m_value;
|
|
}
|
|
|
|
Type type() const { return m_property_type; }
|
|
bool is_method() const { return m_is_method; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Completion execute(Interpreter&) const override;
|
|
|
|
private:
|
|
Type m_property_type;
|
|
bool m_is_method { false };
|
|
NonnullRefPtr<Expression> m_key;
|
|
RefPtr<Expression> m_value;
|
|
};
|
|
|
|
class ObjectExpression final : public Expression {
|
|
public:
|
|
explicit ObjectExpression(SourceRange source_range, NonnullRefPtrVector<ObjectProperty> properties = {})
|
|
: Expression(source_range)
|
|
, m_properties(move(properties))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
virtual bool is_object_expression() const override { return true; }
|
|
|
|
NonnullRefPtrVector<ObjectProperty> m_properties;
|
|
};
|
|
|
|
class ArrayExpression final : public Expression {
|
|
public:
|
|
ArrayExpression(SourceRange source_range, Vector<RefPtr<Expression>> elements)
|
|
: Expression(source_range)
|
|
, m_elements(move(elements))
|
|
{
|
|
}
|
|
|
|
Vector<RefPtr<Expression>> const& elements() const { return m_elements; }
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
virtual bool is_array_expression() const override { return true; }
|
|
|
|
Vector<RefPtr<Expression>> m_elements;
|
|
};
|
|
|
|
class TemplateLiteral final : public Expression {
|
|
public:
|
|
TemplateLiteral(SourceRange source_range, NonnullRefPtrVector<Expression> expressions)
|
|
: Expression(source_range)
|
|
, m_expressions(move(expressions))
|
|
{
|
|
}
|
|
|
|
TemplateLiteral(SourceRange source_range, NonnullRefPtrVector<Expression> expressions, NonnullRefPtrVector<Expression> raw_strings)
|
|
: Expression(source_range)
|
|
, m_expressions(move(expressions))
|
|
, m_raw_strings(move(raw_strings))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
NonnullRefPtrVector<Expression> const& expressions() const { return m_expressions; }
|
|
NonnullRefPtrVector<Expression> const& raw_strings() const { return m_raw_strings; }
|
|
|
|
private:
|
|
NonnullRefPtrVector<Expression> const m_expressions;
|
|
NonnullRefPtrVector<Expression> const m_raw_strings;
|
|
};
|
|
|
|
class TaggedTemplateLiteral final : public Expression {
|
|
public:
|
|
TaggedTemplateLiteral(SourceRange source_range, NonnullRefPtr<Expression> tag, NonnullRefPtr<TemplateLiteral> template_literal)
|
|
: Expression(source_range)
|
|
, m_tag(move(tag))
|
|
, m_template_literal(move(template_literal))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
ThrowCompletionOr<Value> get_template_object(Interpreter&) const;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> const m_tag;
|
|
NonnullRefPtr<TemplateLiteral> const m_template_literal;
|
|
mutable HashMap<Realm*, Handle<Array>> m_cached_values;
|
|
};
|
|
|
|
class MemberExpression final : public Expression {
|
|
public:
|
|
MemberExpression(SourceRange source_range, NonnullRefPtr<Expression> object, NonnullRefPtr<Expression> property, bool computed = false)
|
|
: Expression(source_range)
|
|
, m_computed(computed)
|
|
, m_object(move(object))
|
|
, m_property(move(property))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual ThrowCompletionOr<Reference> to_reference(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
bool is_computed() const { return m_computed; }
|
|
Expression const& object() const { return *m_object; }
|
|
Expression const& property() const { return *m_property; }
|
|
|
|
DeprecatedString to_string_approximation() const;
|
|
|
|
bool ends_in_private_name() const;
|
|
|
|
private:
|
|
virtual bool is_member_expression() const override { return true; }
|
|
|
|
bool m_computed { false };
|
|
NonnullRefPtr<Expression> m_object;
|
|
NonnullRefPtr<Expression> m_property;
|
|
};
|
|
|
|
class OptionalChain final : public Expression {
|
|
public:
|
|
enum class Mode {
|
|
Optional,
|
|
NotOptional,
|
|
};
|
|
|
|
struct Call {
|
|
Vector<CallExpression::Argument> arguments;
|
|
Mode mode;
|
|
};
|
|
struct ComputedReference {
|
|
NonnullRefPtr<Expression> expression;
|
|
Mode mode;
|
|
};
|
|
struct MemberReference {
|
|
NonnullRefPtr<Identifier> identifier;
|
|
Mode mode;
|
|
};
|
|
struct PrivateMemberReference {
|
|
NonnullRefPtr<PrivateIdentifier> private_identifier;
|
|
Mode mode;
|
|
};
|
|
|
|
using Reference = Variant<Call, ComputedReference, MemberReference, PrivateMemberReference>;
|
|
|
|
OptionalChain(SourceRange source_range, NonnullRefPtr<Expression> base, Vector<Reference> references)
|
|
: Expression(source_range)
|
|
, m_base(move(base))
|
|
, m_references(move(references))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual ThrowCompletionOr<JS::Reference> to_reference(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
struct ReferenceAndValue {
|
|
JS::Reference reference;
|
|
Value value;
|
|
};
|
|
ThrowCompletionOr<ReferenceAndValue> to_reference_and_value(Interpreter&) const;
|
|
|
|
NonnullRefPtr<Expression> m_base;
|
|
Vector<Reference> m_references;
|
|
};
|
|
|
|
class MetaProperty final : public Expression {
|
|
public:
|
|
enum class Type {
|
|
NewTarget,
|
|
ImportMeta,
|
|
};
|
|
|
|
MetaProperty(SourceRange source_range, Type type)
|
|
: Expression(source_range)
|
|
, m_type(type)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
Type m_type;
|
|
};
|
|
|
|
class ImportCall final : public Expression {
|
|
public:
|
|
ImportCall(SourceRange source_range, NonnullRefPtr<Expression> specifier, RefPtr<Expression> options)
|
|
: Expression(source_range)
|
|
, m_specifier(move(specifier))
|
|
, m_options(move(options))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Completion execute(Interpreter&) const override;
|
|
|
|
private:
|
|
virtual bool is_import_call() const override { return true; }
|
|
|
|
NonnullRefPtr<Expression> m_specifier;
|
|
RefPtr<Expression> m_options;
|
|
};
|
|
|
|
class ConditionalExpression final : public Expression {
|
|
public:
|
|
ConditionalExpression(SourceRange source_range, NonnullRefPtr<Expression> test, NonnullRefPtr<Expression> consequent, NonnullRefPtr<Expression> alternate)
|
|
: Expression(source_range)
|
|
, m_test(move(test))
|
|
, m_consequent(move(consequent))
|
|
, m_alternate(move(alternate))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_test;
|
|
NonnullRefPtr<Expression> m_consequent;
|
|
NonnullRefPtr<Expression> m_alternate;
|
|
};
|
|
|
|
class CatchClause final : public ASTNode {
|
|
public:
|
|
CatchClause(SourceRange source_range, FlyString parameter, NonnullRefPtr<BlockStatement> body)
|
|
: ASTNode(source_range)
|
|
, m_parameter(move(parameter))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
CatchClause(SourceRange source_range, NonnullRefPtr<BindingPattern> parameter, NonnullRefPtr<BlockStatement> body)
|
|
: ASTNode(source_range)
|
|
, m_parameter(move(parameter))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
auto& parameter() const { return m_parameter; }
|
|
BlockStatement const& body() const { return m_body; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Completion execute(Interpreter&) const override;
|
|
|
|
private:
|
|
Variant<FlyString, NonnullRefPtr<BindingPattern>> m_parameter;
|
|
NonnullRefPtr<BlockStatement> m_body;
|
|
};
|
|
|
|
class TryStatement final : public Statement {
|
|
public:
|
|
TryStatement(SourceRange source_range, NonnullRefPtr<BlockStatement> block, RefPtr<CatchClause> handler, RefPtr<BlockStatement> finalizer)
|
|
: Statement(source_range)
|
|
, m_block(move(block))
|
|
, m_handler(move(handler))
|
|
, m_finalizer(move(finalizer))
|
|
{
|
|
}
|
|
|
|
BlockStatement const& block() const { return m_block; }
|
|
CatchClause const* handler() const { return m_handler; }
|
|
BlockStatement const* finalizer() const { return m_finalizer; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<BlockStatement> m_block;
|
|
RefPtr<CatchClause> m_handler;
|
|
RefPtr<BlockStatement> m_finalizer;
|
|
};
|
|
|
|
class ThrowStatement final : public Statement {
|
|
public:
|
|
explicit ThrowStatement(SourceRange source_range, NonnullRefPtr<Expression> argument)
|
|
: Statement(source_range)
|
|
, m_argument(move(argument))
|
|
{
|
|
}
|
|
|
|
Expression const& argument() const { return m_argument; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_argument;
|
|
};
|
|
|
|
class SwitchCase final : public ScopeNode {
|
|
public:
|
|
SwitchCase(SourceRange source_range, RefPtr<Expression> test)
|
|
: ScopeNode(source_range)
|
|
, m_test(move(test))
|
|
{
|
|
}
|
|
|
|
Expression const* test() const { return m_test; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Completion execute(Interpreter&) const override;
|
|
|
|
private:
|
|
RefPtr<Expression> m_test;
|
|
};
|
|
|
|
class SwitchStatement final : public ScopeNode {
|
|
public:
|
|
SwitchStatement(SourceRange source_range, NonnullRefPtr<Expression> discriminant)
|
|
: ScopeNode(source_range)
|
|
, m_discriminant(move(discriminant))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_labelled_evaluation(Bytecode::Generator&, Vector<FlyString> const&) const;
|
|
|
|
Completion execute_impl(Interpreter&) const;
|
|
void add_case(NonnullRefPtr<SwitchCase> switch_case) { m_cases.append(move(switch_case)); }
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_discriminant;
|
|
NonnullRefPtrVector<SwitchCase> m_cases;
|
|
};
|
|
|
|
class BreakStatement final : public Statement {
|
|
public:
|
|
BreakStatement(SourceRange source_range, FlyString target_label)
|
|
: Statement(source_range)
|
|
, m_target_label(move(target_label))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
|
|
FlyString const& target_label() const { return m_target_label; }
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
FlyString m_target_label;
|
|
};
|
|
|
|
class ContinueStatement final : public Statement {
|
|
public:
|
|
ContinueStatement(SourceRange source_range, FlyString target_label)
|
|
: Statement(source_range)
|
|
, m_target_label(move(target_label))
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
FlyString const& target_label() const { return m_target_label; }
|
|
|
|
private:
|
|
FlyString m_target_label;
|
|
};
|
|
|
|
class DebuggerStatement final : public Statement {
|
|
public:
|
|
explicit DebuggerStatement(SourceRange source_range)
|
|
: Statement(source_range)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<void> generate_bytecode(Bytecode::Generator&) const override;
|
|
};
|
|
|
|
class SyntheticReferenceExpression final : public Expression {
|
|
public:
|
|
explicit SyntheticReferenceExpression(SourceRange source_range, Reference reference, Value value)
|
|
: Expression(source_range)
|
|
, m_reference(move(reference))
|
|
, m_value(value)
|
|
{
|
|
}
|
|
|
|
virtual Completion execute(Interpreter&) const override { return m_value; }
|
|
virtual ThrowCompletionOr<Reference> to_reference(Interpreter&) const override { return m_reference; }
|
|
|
|
private:
|
|
Reference m_reference;
|
|
Value m_value;
|
|
};
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<NewExpression>() const { return is_new_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<MemberExpression>() const { return is_member_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<SuperExpression>() const { return is_super_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<FunctionExpression>() const { return is_function_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ClassExpression>() const { return is_class_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<Identifier>() const { return is_identifier(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<PrivateIdentifier>() const { return is_private_identifier(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ExpressionStatement>() const { return is_expression_statement(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ScopeNode>() const { return is_scope_node(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<Program>() const { return is_program(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ClassDeclaration>() const { return is_class_declaration(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<FunctionDeclaration>() const { return is_function_declaration(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<VariableDeclaration>() const { return is_variable_declaration(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ArrayExpression>() const { return is_array_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ObjectExpression>() const { return is_object_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ImportCall>() const { return is_import_call(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<StringLiteral>() const { return is_string_literal(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<UpdateExpression>() const { return is_update_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<CallExpression>() const { return is_call_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<LabelledStatement>() const { return is_labelled_statement(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<IterationStatement>() const { return is_iteration_statement(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ClassMethod>() const { return is_class_method(); }
|
|
|
|
}
|